Mirion Technologies, Inc.
MIR- Exchange
- NYSE
- Industry
- Measuring & Controlling Devices, NEC
- SEC CIK
- 0001809987
In the last 90 days, Mirion Technologies, Inc. insiders filed 1 open-market purchase and 0 sales; 351 institutions reported holding it in 13F filings for Q2 2026, worth $4.70B in total; Maverick Capital is the only superinvestor holding it.
13F holders, Q4 2025
Institutional positions in Mirion Technologies, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 365
- +26 vs. Q3 2025
- Shares held
- 252.2M
- −2.75M (−1.1%) vs. Q3 2025
- Total value
- $5.91B
- −$22.0M (−0.4%) vs. Q3 2025
- New holders
- 82
- 147 more added
- Sold out
- 56
- 94 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MIR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 351 | $4.70B |
| Q1 2026 | 362 | $4.71B |
| Q4 2025 | 365 | $5.91B |
| Q3 2025 | 343 | $5.93B |
| Q2 2025 | 302 | $4.46B |
| Q1 2025 | 230 | $2.69B |
| Q4 2024 | 224 | $3.38B |
| Q3 2024 | 176 | $2.27B |
| Q2 2024 | 155 | $2.12B |
| Q1 2024 | 143 | $2.14B |
| Q4 2023 | 125 | $1.93B |
| Q3 2023 | 127 | $1.40B |
| Q2 2023 | 124 | $1.53B |
| Q1 2023 | 117 | $1.45B |
| Q4 2022 | 119 | $1.01B |
| Q3 2022 | 121 | $1.27B |
| Q2 2022 | 115 | $921.8M |
| Q1 2022 | 108 | $1.20B |
| Q4 2021 | 93 | $1.52B |
| Q3 2021 | 4 | $16.4M |
| Q2 2021 | 1 | $20.8K |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Jefferies Financial Group Inc. | 8,500 | $199.1K | 0.00% | +8,500 | New |
| Merit Financial Group, LLC | 8,574 | $200.8K | 0.00% | +8,574 | New |
| CastleKnight Management LP | 8,750 | $204.9K | 0.01% | 00.0% | Unchanged |
| Integrated Advisors Network LLC | 8,957 | $209.8K | 0.01% | −581−6.1% | Reduced |
| Absher Wealth Management, LLC | 9,000 | $210.8K | 0.03% | 00.0% | Unchanged |
| JustInvest LLC | 9,059 | $212.2K | 0.00% | +9,059 | New |
| Schonfeld Strategic Advisors LLC | 9,198 | $215.4K | 0.00% | +9,198 | New |
| Forum Financial Management, LP | 9,317 | $218.2K | 0.00% | 00.0% | Unchanged |
| Atria Investments LLC | 9,650 | $226.0K | 0.00% | +9,650 | New |
| Weiss Asset Management LP | 9,720 | $227.6K | 0.00% | +9,720 | New |
| CIBC Asset Management Inc | 9,840 | $230.5K | 0.00% | +9,840 | New |
| Corient IA LLC | 10,000 | $234.2K | 0.22% | 00.0% | Unchanged |
| Aigen Investment Management, LP | 10,522 | $246.4K | 0.06% | +10,522 | New |
| Stratos Wealth Partners, LTD. | 10,567 | $247.5K | 0.00% | +484+4.8% | Added |
| VARCOV Co. | 10,838 | $253.8K | 0.10% | +10,838 | New |
| Swiss Life Asset Management Ltd | 10,856 | $254.2K | 0.00% | +1,024+10.4% | Added |
| Profund Advisors LLC | 10,954 | $256.5K | 0.01% | −333−3.0% | Reduced |
| Prelude Capital Management, LLC | 11,085 | $259.6K | 0.02% | −20,197−64.6% | Reduced |
| SBI Okasan Asset Management Co.Ltd. | 11,000 | $261.5K | 0.01% | +11,000 | New |
| Quantinno Capital Management LP | 11,286 | $264.3K | 0.00% | +11,286 | New |
| O'Shaughnessy Asset Management, LLC | 11,546 | $270.4K | 0.00% | +1,525+15.2% | Added |
| Altshuler Shaham Ltd | 11,704 | $274.1K | 0.00% | +563+5.1% | Added |
| Amundi | 12,300 | $288.1K | 0.00% | +12,300 | New |
| Harbour Capital Advisors, LLC | 12,125 | $288.9K | 0.06% | +12,125 | New |
| Cerity Partners LLC | 12,610 | $295.3K | 0.00% | −873−6.5% | Reduced |
| Keybank National Association | 13,700 | $320.9K | 0.00% | +85+0.6% | Added |
| Vident Advisory, LLC | 14,128 | $330.9K | 0.00% | +14,128 | New |
| Ieq Capital, LLC | 14,522 | $340.1K | 0.00% | −24,041−62.3% | Reduced |
| Tributary Capital Management, LLC | 14,800 | $346.6K | 0.03% | +14,800 | New |
| Sandler Capital Management | 15,194 | $355.8K | 0.16% | −61,332−80.1% | Reduced |
| Inceptionr LLC | 15,428 | $361.3K | 0.10% | +15,428 | New |
| Glenmede Trust Co NA | 15,623 | $365.9K | 0.00% | +15,623 | New |
| Bank of Montreal | 15,821 | $370.5K | 0.00% | −274−1.7% | Reduced |
| CIBC World Markets Corp | 15,870 | $371.7K | 0.00% | +15,870 | New |
| New Age Alpha Advisors, LLC | 16,077 | $376.5K | 0.02% | +16,077 | New |
| Ethic Inc. | 16,271 | $381.1K | 0.01% | +4,795+41.8% | Added |
| NBC Securities, Inc. | 16,314 | $382.1K | 0.03% | +105+0.6% | Added |
| MML Investors Services, LLC | 16,604 | $388.9K | 0.00% | +1,692+11.3% | Added |
| CWM, LLC | 17,138 | $401.0K | 0.00% | +43+0.3% | Added |
| Toronto Dominion Bank | 17,746 | $415.6K | 0.00% | +17,746 | New |
| SCP Investment, LP | 18,000 | $421.6K | 0.34% | +18,000 | New |
| The PNC Financial Services Group, Inc. | 18,264 | $427.7K | 0.00% | +5,536+43.5% | Added |
| Xponance, Inc. | 18,843 | $441.3K | 0.00% | +1,483+8.5% | Added |
| Blueshift Asset Management, LLC | 18,846 | $441.4K | 0.13% | +18,846 | New |
| Wealth Enhancement Advisory Services, LLC | 17,857 | $450.0K | 0.00% | +60.0% | Added |
| Cetera Investment Advisers | 19,707 | $461.5K | 0.00% | +1,836+10.3% | Added |
| Ameritas Investment Partners, Inc. | 19,840 | $464.7K | 0.01% | 00.0% | Unchanged |
| Marietta Investment Partners LLC | 19,953 | $467.3K | 0.09% | +19,953 | New |
| Vontobel Holding Ltd. | 20,079 | $470.3K | 0.00% | −7,597−27.4% | Reduced |
| STRS Ohio | 20,700 | $484.8K | 0.00% | −7,600−26.9% | Reduced |
| Headlands Technologies LLC | 20,964 | $491.0K | 0.04% | +20,964 | New |
| Russell Investments Group, Ltd. | 22,080 | $517.1K | 0.00% | +2,235+11.3% | Added |
| Janney Montgomery Scott LLC | 22,365 | $524.0K | 0.00% | −395−1.7% | Reduced |
| Simon Quick Advisors, LLC | 23,884 | $559.4K | 0.02% | +50.0% | Added |
| Premier Fund Managers Ltd | 23,605 | $560.0K | 0.03% | −4,547−16.2% | Reduced |
| Themes Management Co LLC | 24,739 | $579.4K | 0.46% | +24,739 | New |
| Twin Tree Management, LP | 25,134 | $588.6K | 0.06% | −49,984−66.5% | Reduced |
| Van Eck Associates Corp | 25,132 | $589.0K | 0.00% | +14,632+139.4% | Added |
| Captrust Financial Advisors | 25,232 | $590.9K | 0.00% | +9,580+61.2% | Added |
| Public Employees Retirement Association of Colorado | 27,553 | $645.0K | 0.00% | 00.0% | Unchanged |
| Laurion Capital Management LP | 28,188 | $660.2K | 0.05% | +28,188 | New |
| Mutual of America Capital Management LLC | 28,324 | $663.3K | 0.01% | +867+3.2% | Added |
| Sanctuary Advisors, LLC | 30,183 | $706.9K | 0.00% | −1,066−3.4% | Reduced |
| Calamos Advisors LLC | 31,700 | $742.4K | 0.00% | −12,700−28.6% | Reduced |
| Pictet Asset Management Holding SA | 33,392 | $782.0K | 0.00% | +5,473+19.6% | Added |
| Truist Financial Corp | 33,856 | $792.9K | 0.00% | +1,653+5.1% | Added |
| Oppenheimer & Co Inc | 33,981 | $795.8K | 0.01% | +1,919+6.0% | Added |
| Ostrum Asset Management | 34,380 | $805.2K | 0.04% | +34,380 | New |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 34,774 | $814.4K | 0.18% | +17,674+103.4% | Added |
| Maryland State Retirement & Pension System | 36,281 | $849.7K | 0.02% | +864+2.4% | Added |
| La Banque Postale Asset Management SA | 37,090 | $868.6K | 0.01% | +37,090 | New |
| Hudson Bay Capital Management LP | 40,000 | $936.8K | 0.01% | +40,000 | New |
| Cresset Asset Management, LLC | 42,500 | $995.4K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 43,827 | $1.03M | 0.00% | −73,242−62.6% | Reduced |
| Qsemble Capital Management, LP | 44,319 | $1.04M | 0.09% | +44,319 | New |
| Zions Bancorporation, National Association | 44,771 | $1.05M | 0.05% | +44,771 | New |
| ProShare Advisors LLC | 46,728 | $1.09M | 0.00% | +5,141+12.4% | Added |
| Daiwa Securities Group Inc. | 47,000 | $1.10M | 0.00% | +1,600+3.5% | Added |
| 1832 Asset Management L.P. | 50,000 | $1.17M | 0.00% | +10,000+25.0% | Added |
| PensionDanmark Pensionsforsikringsaktieselskab | 50,000 | $1.17M | 0.01% | +50,000 | New |
| KLP Kapitalforvaltning AS | 50,200 | $1.18M | 0.00% | +5,800+13.1% | Added |
| Madison Asset Management, LLC | 56,644 | $1.33M | 0.02% | +56,644 | New |
| Oregon Public Employees Retirement Fund | 56,700 | $1.33M | 0.02% | +1,500+2.7% | Added |
| Twinbeech Capital LP | 57,100 | $1.34M | 0.10% | +57,100 | New |
| State Board of Administration of Florida Retirement System | 57,210 | $1.34M | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 59,081 | $1.38M | 0.00% | +59,081 | New |
| Teachers Retirement System of the State of Kentucky | 60,506 | $1.42M | 0.01% | +8,006+15.2% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 61,352 | $1.44M | 0.01% | −1,094−1.8% | Reduced |
| Mariner, LLC | 62,504 | $1.46M | 0.00% | +26,698+74.6% | Added |
| DDD Partners, LLC | 63,038 | $1.48M | 0.09% | +63,038 | New |
| Police & Firemen's Retirement System of New Jersey | 63,776 | $1.49M | 0.01% | +4,144+6.9% | Added |
| Arizona State Retirement System | 65,478 | $1.53M | 0.01% | +2,071+3.3% | Added |
| Sterling Capital Management LLC | 68,802 | $1.61M | 0.03% | −19,792−22.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 70,918 | $1.66M | 0.00% | +70,918 | New |
| Amalgamated Bank | 71,781 | $1.68M | 0.01% | +2,052+2.9% | Added |
| Handelsbanken Fonder AB | 72,531 | $1.70M | 0.01% | 00.0% | Unchanged |
| Register Financial Advisors LLC | 73,650 | $1.72M | 0.67% | +7,850+11.9% | Added |
| Yousif Capital Management, LLC | 66,959 | $1.76M | 0.02% | −8,032−10.7% | Reduced |
| Capstone Investment Advisors, LLC | 75,700 | $1.77M | 0.01% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 74,501 | $1.85M | 0.01% | +17,081+29.7% | Added |